/Engine/Source/Runtime/MovieSceneCapture/Public/MovieSceneCaptureProtocolBase.h
virtual [FString](API\Runtime\Core\Containers\FString) GenerateFilenameImpl ( const [FFrameMetrics](API\Runtime\MovieSceneCapture\FFrameMetrics) & FrameMetrics, const TCHAR * Extension, const [FString](API\Runtime\Core\Containers\FString) * NameFormatString ) const